Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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South River, ON

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
249-573 A HNVION174MD  464D FIBERNETICS CORPORATION 888 805112    
249-603 A SORVON350MD  2782 TELUS INTEGRATED COMMUNICATIONS 888 805112    
683-770 A   812H IXICA COMMUNICATIONS, INC. 888 805112    
705-386 A SORVON35RS1  8051 BELL ONTARIO 888 805112    

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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